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Manufacturing of a Hand Dryer Cover
Štancl, Oldřich ; Jopek, Miroslav (referee) ; Řiháček, Jan (advisor)
The thesis deals with the design of the hand dryer cover made of stainless steel X5CrNi18-10. The manufactured part has a hollow rectangular shape with a rounded bottom and a constant wall thickness of 1 mm. Due to the simplicity of the shape, material properties and the annual production series of 200,000 pieces, deep drawing technology is chosen for production. The part is produced in one drawing operation, for which the necessary technological and control calculations are performed. Using the calculated parameters, a DIEFFENBACHER PO 250 hydraulic three-acting press is selected. A simple drawing tool is constructed for the machine, whose operation and manufacturability of the cover is subsequently verified using numerical simulation in the PAM-Stamp software.
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Manufacturing of a Car Door Lock Segment
Vrtiška, Roman ; Peterková, Eva (referee) ; Řiháček, Jan (advisor)
The bachelor thesis is focused on production of car door lock segment, which is made of steel 15CrMo5 with a thickness of 4 mm. Based on the established production quantity of 280 000 pieces per year, the prescribed dimensional accuracy and surface quality of the cutting surface, the technology of fine blanking with vee-ring is chosen. In the practical part of the work, technological controls of the manufactured part are carried out. A coil of the sheet metal as a semi-finished product and cutting plan with the highest percentage utilization were chosen. For established quantity production, 61 pieces of coil weighing 500 kilograms are needed. Based on the technological, control and construction calculations, the tool is constructed, including drawing documentation. Due to the calculated overall force Fc = 1 085,85 kN and the top view area of the tool the triple-action mechanical press XFT 1500speed is chosen. The press is part of the line with the FBA 6/300 coil processing line.
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Laser Forming
Kameník, Jan ; Peterková, Eva (referee) ; Řiháček, Jan (advisor)
The work focuses on the use of laser beam in forming. The basic types of solid-state and gas lasers and their interaction with the material are described. It also discusses the possible mechanisms of bending in sheet metal and tubes. Subsequently, the paper discusses analytical and numerical models for determining the magnitude of the bending angle. The final part of the thesis deals with examples of laser-formed products and other possible applications in engineering.
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Manufacturing of protecting cover by compound tool
Janáč, Jakub ; Řiháček, Jan (referee) ; Peterková, Eva (advisor)
The master‘s thesis deals with a proposal of the manufacturing of a protective cover, which is sheet metal part with a thickness of 3 mm from the EN AW-3103 alloy. According to the analysis of possible technologies, the most effective option is production in a progressive die. This combines cutting and bending and these technologies are analyzed in a literature study. Based on the assessment of the technology control and control calculations a die is designed. This die produces the part in five steps. As a suitable machine an eccentric press Vaptech PE160MA is chosen.
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Manufacturing of start segment by fineblanking technology
Tichoň, Ondřej ; Řiháček, Jan (referee) ; Peterková, Eva (advisor)
The thesis deals with the design of the manufacturing technology of the starting segment, which is used to transmit the torque from the starting lever of the motorcycle. The part is made of steel 11 373 in the form of a sheet with a thickness of 6 mm, and the production series is set at 60,000 pieces per year. As part of the thesis, an innovation was proposed, which consists of cold pressing the shaft into the hole, and thereby eliminating the associated welding operation, speeding up production and making it more precise. Due to the required precision and the size of the series, a fine blanking was chosen for the production of the starting segment. Furthermore, coils of sheet metal were chosen as a semi-finished product, while 19 coils with a diameter of 1400 mm and one incomplete coil with a diameter of 1085 mm are needed to ensure the production series. The total force for cutting out two components in one stroke was determined to be 4680,4 kN. Due to the given strength and dimensions of the sheet metal, a triple-action hydraulic press FB one 7000 was chosen for production. The work also includes a technical-economic evaluation, through which it was found that the given production becomes profitable at 34987 pieces. Therefore, due to the size of the production series, it can be declared that the production is profitable.
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Optimization of a machine assembly process
Obořil, Filip ; Řiháček, Jan (referee) ; Štroner, Marek (advisor)
The diploma thesis deals with the optimization of the assembly of a machine designed for printing paper material. In the introduction, the company Windmöller & Hölscher, with which the work was collaborated, is introduced. The theoretical part is focused on lean production methods and types of industrial printing. In the practical part, the design is optimized with the use of lean production, adjustment of the assembly procedure, creation of instructions and adjustment of the layout of the assembly box. The proposed optimizations are subsequently evaluated from a financial point of view and, if possible, the return on investment is calculated.
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Production Design of the Bicycle Disc Brake
Brejčák, Dušan ; Císařová, Michaela (referee) ; Řiháček, Jan (advisor)
The solved problem is production of brake disc, which is part of bicycle´s disc brake. For production is chosen rustproof steel ČSN 17 024. The thickness of materiál is 2 mm and there are 200 000 pieces produced per a year. After assessment of manufacturing variants the best method is fine-blanking technology with v-ring and there is developed a literary recherche for this matter. Then there are evaluated technological and control calculations. For production as semiproduced material is chosen roll of sheet metal with its outside diameter 1 200 mm. There is made a suggestion of design of cutting tool and for manufacturing it is chosen hydraulic press Feintool HFA 4 000.
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Development of Transport Cart with Stretcher
Bastl, Dominik ; Císařová, Michaela (referee) ; Řiháček, Jan (advisor)
The diploma thesis deals with the design of a transport gurney with a stretcher for people up to 150 kg. The aim is to design the simplest possible construction of bent and welded pipes and profiles with a thickness of 1.5 and 2 mm from E235+CR1 S2 steel, based on an already functional product on the market, taking into account the commissioning company's available machinery AUDY s.r.o. The theoretical part of the work is devoted to the main production technologies, i.e. bending and welding. A literature search is prepared for the mentioned technologies. Bending is more focused on length of the blank and springback angle. In welding, the weldability of the selected steel is assessed, a suitable welding wire with shielding gas is selected and the process parameters are determined. Theoretical findings are compared with practical outputs. The practical part includes design, prototype production and trial tests to verify the reliability of the new product. Necessary construction and technological calculations with basic drawing documentation are also included.
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Manufacturing of the Motorcycle Cover
Jindrák, Martin ; Harant, Martin (referee) ; Řiháček, Jan (advisor)
The bachelor's thesis deals with the production of a motorcycle protective cover made of steel 11 320 with a thickness of 1.5 mm. The production batch is set at 80,000 pieces per year. Based on the analysis of the production methods and according to the prescribed requirements, deep drawing is chosen as the appropriate method. The manufacturability is verified with the help of calculations, which is followed by the design of the ideal shape of the semi-finished product. The cut will be laser cut from a sheet of metal. After carrying out the technological calculations, the tool is constructed, including drawing documentation. A suitable machine is chosen for the tool, which is a universal hydraulic press CTH 250. The conclusion of the work is focused on performing a simulation to check the yield.
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Production Design of a Holder for Paddle Valve and Pressure Gauge
Bílek, Jan ; Harant, Martin (referee) ; Řiháček, Jan (advisor)
The bachelor thesis is focused on the design of a suitable manufacturing technology for a sheet metal holder for valve and pressure gauge control for buses. A 1.5 mm thick sheet metal roll was chosen as a semi-finished product. S235JR structural steel was selected as the optimum material. The production series was set at 150,000 pieces per year. After evaluating suitable production methods, the technology of sequential shearing and bending combined in a combined tool was chosen. In the proposed tool, the part will be produced in four steps from 11 rolls with 95.85 % utilization. The production will be carried out in a Mecânica Exacta eccentric press, model CC100, supplemented by a coil unwinding device.
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